A progressive learning method on unknown protocol behaviors

Abstract Purpose To propose and validate a total-body PET (TB-PET) guided deep progressive learning method (DPR) for low-dose clinical imaging of standard axial field-of-view PET/CT scanner (SAFOV-PET).Methods List-mode raw data from a total of 182 scans were collected, including 100 patient scans from a TB-PET, and 15 phantom and 67 patient scans from a SAFOV-PET. Neural networks employed in DPR were trained with the high-quality images obtained from the TB-PET using a progressive learning strategy and evaluated on a SAFOV-PET through three stages of studies. The CTN phantom was firstly used to verify the effectiveness of protocols in DPR and OSEM algorithms. Subsequently, list-mode rawdata from retrospective and prospective PET oncological patients (n=26 and 41, respectively) were rebinned into short duration scans (referred as to DPR_full, DPR_1/2, DPR_1/3, and DPR_1/4), and reconstructed with DPR. Full-duration data were reconstructed with OSEM to generate images as a reference. In the retrospective study, the image quality was evaluated using the metrics of standard uptake value (SUV) and target-to-liver ratio (TLR) in lesions, and coefficient of variation (COV) in the liver, which provided evidence for the subsequent study with real-world low-dose injection. In the prospective study, the quantification accuracy was evaluated with the agreement of SUVs in the liver, the blood pool, and the muscle between the DPR and the OSEM images. Quantitative analysis was also performed with the SUV and the TLR in lesions, furthermore on small lesions with a diameter no more than 10mm. In addition, qualitative analysis was performed using a 5-point Likert scale on the following perspectives: contrast, noise, and diagnostic confidence. Results The protocols used in the study were verified to meet the EANM EARL2 requirements. In the retrospective study, the DPR group with one-third acquisition time can yield a comparable image quality to the reference. In the prospective study, good agreement of the SUVs between DPR and OSEM was found in all the selected background tissues even if the injected dose was reduced to 1/3. Both quantitative and qualitative results demonstrated that the DPR_1/3 group showed no significant difference with the reference regarding the liver COV and subjective scores. The lesion SUVs and TLRs in the DPR_1/3 group were significantly enhanced compared with the reference, even for small lesions. Conclusions The proposed DPR method can reduce the injected dose of SAFOV-PET scan by up to 2/3 in a real-world deployment while maintaining image quality.

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Hierarchical progressive learning of cell identities in single-cell data

Nature Communications ◽

10.1038/s41467-021-23196-8 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Lieke Michielsen ◽

Marcel J. T. Reinders ◽

Ahmed Mahfouz

Keyword(s):

Single Cell ◽

Classification Tree ◽

Learning Performance ◽

Continuous Learning ◽

Learning Method ◽

Multiple Datasets ◽

Supervised Methods ◽

Downstream Analysis ◽

Cell Data ◽

Progressive Learning

AbstractSupervised methods are increasingly used to identify cell populations in single-cell data. Yet, current methods are limited in their ability to learn from multiple datasets simultaneously, are hampered by the annotation of datasets at different resolutions, and do not preserve annotations when retrained on new datasets. The latter point is especially important as researchers cannot rely on downstream analysis performed using earlier versions of the dataset. Here, we present scHPL, a hierarchical progressive learning method which allows continuous learning from single-cell data by leveraging the different resolutions of annotations across multiple datasets to learn and continuously update a classification tree. We evaluate the classification and tree learning performance using simulated as well as real datasets and show that scHPL can successfully learn known cellular hierarchies from multiple datasets while preserving the original annotations. scHPL is available at https://github.com/lcmmichielsen/scHPL.

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The English Camps as Method of Promoting Fun English at Elementary School Level in Indonesia

Tapis Jurnal Penelitian Ilmiah ◽

10.32332/tapis.v4i2.2563 ◽

2020 ◽

Vol 4 (2) ◽

pp. 174

Author(s):

Meida Rachmawati ◽

Suzana Widjajanti ◽

Ahmad Ahmad ◽

Aslan Aslan

Keyword(s):

Elementary School ◽

Language Learning ◽

Curriculum Design ◽

Scientific Evidence ◽

School Curriculum ◽

School Level ◽

English Learning ◽

Learning Method ◽

School Students ◽

Scientific Publications

This article aimed to promote English in elementary school students through a fun learning method, called the Fun English Camp. Several studies had been conducted to encounter the best solution to handle this issue. The researchers used PRISMA Protocol as an instrument to collect the data that has been widely used in the process of selecting relevant articles. The researchers reviewed twenty five scientific publications, related to Fun English Camp that has become an English learning approach for beginner students. Through a review of twenty five scientific publications, for instance book and journal, the researchers got scientific evidence that introduction of a learning method with the term Fun English camp has an impact on promoting language learning for elementary school children in Indonesia. Thus, the fun English camp method can be an interesting method to be applied by elementary school curriculum design in Indonesia. Keywords: English Camps, Learning Method, Fun English Learning

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THE INFLUENCE OF INQUIRY AND DISCOVERY LEARNING METHOD AND CREATIVITY LEVEL IN WRITING SKILLS DESCRIPTION IN NAUTIC TARUNA AND TECHNIQUE IN SURABAYA SHIPPING POLYTECHNIC

SASTRANESIA Jurnal Program Studi Pendidikan Bahasa dan Sastra Indonesia ◽

10.32682/sastranesia.v8i1.1372 ◽

2020 ◽

Vol 8 (1) ◽

Author(s):

Ni Putu Dian Permata Prasetyaningrum

Keyword(s):

Quantitative Methods ◽

Writing Skills ◽

Discovery Learning ◽

Learning Method ◽

Test Results ◽

Learning Methods ◽

Is Research ◽

Investigation Methods ◽

High Level ◽

Discovery Method

Surabaya Shipping Polytechnic emphasizes on certain areas of expertise that Taruna must possess. This is the basis after graduating from shipping polytechnics, cadets must have expertise and skills. The purpose of this study was to study the effect of inquiry, discovery learning, and creativity levels on the ability to write descriptive essays on nautical and technical cadets at Surabaya Shipping Polytechnic. This type of research is research. This research uses quantitative methods using experiments. The location used in this research is Surabaya Shipping Polytechnic. The subjects in this study were the cadets of the Nautika A, Nautika B, Teknika A, and Teknika B. classes. Based on the results of the research and discussion, the following conclusions are obtained: There are those that can be solved looking for description essays in the cadets. learning discovery method. The test results show better investigation methods than the discovery of learning, There is a difference in the ability to write a description essay about cadets who have a high level of creativity with cadets who have a low level of creativity, the test results show better who have a high level of creativity, there are related with learning methods and descriptions of the ability to write essay descriptions, the test results show learning methods and creativity descriptions of the ability to write essay descriptions.

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PENERAPAN METODE COOPERATIVE LEARNING TIPE BERPASANGAN UNTUK MENINGKATKAN KEMAMPUAN TEKNIK DASAR BERMAIN KASTI DI KELAS V.A SDN 002 PANTAI CERMIN KABUPATEN KAMPAR

JURNAL PAJAR (Pendidikan dan Pengajaran) ◽

10.33578/pjr.v2i3.5542 ◽

2018 ◽

Vol 2 (3) ◽

pp. 429

Author(s):

Abd. Mulud

Keyword(s):

Action Research ◽

Data Collection ◽

Cooperative Learning ◽

Learning Method ◽

Initial Test ◽

Basic Technique ◽

Average Ability ◽

Student Activity ◽

Data Collection Instrument ◽

Very High

This research is motivated by the low ability of basic technique of playing the students' grate V.A SDN 002Pantai Cermin Kabupaten Kampar. This study aims to improve the basic techniques of playing kasti throughcooperative learning methods paired type students class V.A SDN 002 Pantai Cermin Kampar District. Thesubjects of this study are students of class V.A SDN 002 Pantai Cermin Kabupaten Kampar with the number ofstudents as many as 28 people. The form of research is classroom action research. The instrument of thisresearch consisted of performance instrument and data collection instrument in the form of observation sheet ofteacher activity and student activity. The basic technique ability to play with cooperative method of paired typelearning in VA VAN 002 Pantai Cermin Kabupaten Kabupaten Kampar average of basic technique ability toplay the students' census on the initial test is categorized less with percentage 48,9%, in cycle I increase to68,4% with sufficient category whereas in cycle II the average ability of students is categorized very high with90.8% percentage. The cassical completeness specified in this study that 80% of students have been declaredthoroughly achieved. The conclusion of this research is the application of cooperative learning method pair typecan improve basic technique of playing kasti.

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UPAYA MENINGKATKAN PRESTASI BELAJAR PKn MELALUI MODEL PEMBELAJARAN KOOPERATIF TIPE TWO STAY TWO STRAY PADA SISWA KELAS IV SD NEGERI 007 PUSARAN

JURNAL PAJAR (Pendidikan dan Pengajaran) ◽

10.33578/pjr.v1i2.4597 ◽

2017 ◽

Vol 1 (2) ◽

pp. 264

Author(s):

Sofian Sofian

Keyword(s):

Cooperative Learning ◽

Student Learning ◽

Positive Impact ◽

Fourth Grade ◽

Learning Model ◽

Learning Activity ◽

Learning Method ◽

Learning Achievement ◽

Model Type ◽

Fourth Grade Students

This research is motivated by low student learning activity on Civics lesson. In order to increase studentlearning activities need a model that is cooperative learning model type two stay two stray in fourth gradestudents SD Negeri 007 Pusaran. It aims to know the improvement of learning achievement of Civics after theimplementation of learning model of cooperative learning type TSTS in fourth grade students of SD Negeri 007Pusaran, knowing the influence of learning motivation of Civics after the implementation of learning withcooperative learning model type TSTS in fourth grade students of SD Negeri 007 Pusaran; provides an overviewof appropriate learning methods in an effort to improve student learning achievement and make students becomeactive in teaching and learning activities. This research was conducted in September of odd semester 2016/2017with object of 24 students. The results concluded that: (1) cooperative learning method type TSTS can improvethe quality of learning Civics; (2) cooperative learning method of TSTS type has positive impact in improvingstudents 'learning achievement which is marked by the improvement of students' learning mastery in every cycle,that is cycle I (54.17%), cycle II (91.67%); 3) TSTS type cooperative learning method can make students feelthemselves getting attention and opportunity to express opinions, ideas, ideas, and questions; 4) students canwork independently or in groups, and be able to account for individual or group tasks; and 5) the application ofcooperative learning method type TSTS have positive influence, that is can improve student's learningmotivation.

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Developing Scramble-Based Learning Method to Increase Students’ Reading and Writing Comprehension

JOURNAL OF TEACHING AND LEARNING IN ELEMENTARY EDUCATION (JTLEE) ◽

10.33578/jtlee.v2i1.6643 ◽

2019 ◽

Vol 2 (1) ◽

pp. 16

Author(s):

Dani Gunawan

Keyword(s):

Pilot Study ◽

Elementary Students ◽

First Grade ◽

Learning Method ◽

Reading And Writing ◽

Learning Technique ◽

Increasing Trend

This study was directed to develop a learning technique, to analyze the obstacles faced by teachers in implementing the lesson, and to overcome the problems faced by teachers in enhancing elementary students’ reading and writing comprehension. In order to fulfill the mentioned goals, this study tried to use scramble-based learning technique. It was cconducted at SDN Gentra Masekdas 1, Kecamatan Tarogong Kaler involving 32 first grade students. A pilot study was conducted on 9 March 2017 for about 35 minutes. The first cycle started on 18 April 2017, while the second one was on 24 April 2017. It was found that there was an increasing trend after the implementation. The analysis proccess generated data as followed: during pilot study, eight students succeeded to reach the standard indicator with percentage of 25%. Cycle I generated 15 students with learning completion percentage of 46.8.%. And, during second cycle, there were 27 students who succeeded in reaching completion standard with completion percentage of 84.3%.

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